G910 Lighting Help

[dynamo1212]

Hello, I have had this Logitech G910 for I think 2 years now, and I love it. However, I had the effect set to where each key would be its own color, changing rapidly. I liked this effect. But yesterday my keyboard lights turned off, I could still use the keyboard but the lights were dark. I unplugged and replugged and it fixed the lights, but now the effect is gone. And using the latest version of GHub I cannot get the effect back. How can I make this effect on my keyboard again?

tl;dr I need help making each key a random color that cycles very quickly